Surepromise 4Pcs Cut Glass Crystal Round Curtain Tie Back Wall Hooks Plating surface treatment hook,not rust, Enclosed with 1 screw and 1 expansion screw. Elegant round shape crystal design Material: Zinc Metal and Crystal Size: pls see the referred picture. Application:European elegant style,concise and really taste,extraordinary charm. Very suitable for sitting room, bedroom,marriage room, mansions, villas and so on. Not only can be used as curtain hook,and also can be used as clothing hook,wall hanging etc..